Step 1: Create a New Single-Event Project - Visual OTTHYMO

The single-event model will be used to verify the model performance under design storms, for example, using it for pond sizing under 4-hour Chicago design storms with 20mm, 25mm and 30mm respectively.

To create a new single-event project, navigate to File tag at the top and create a New Otthymo Project

Analyzing Erosion for New Development

Step 2: Create a Scenario for the Existing Conditions